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Finding the Fourth Proportional to 208,876.94, 288,169.43 and 118,212.11

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Solution

The fourth proportional to 208,876.94, 288,169.43 and 118,212.11 is: 163,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,876.94 : 288,169.43 = 118,212.11 : x
  2. Step 2: Convert to fraction form
    208,876.94/288,169.43 = 118,212.11/x
  3. Step 3: Cross multiply
    208,876.94x = 288,169.43 × 118,212.11
  4. Step 4: Simplify right side
    208,876.94x = 34,065,114,325.89
  5. Step 5: Solve for x
    x = 34,065,114,325.89/208,876.94
  6. Step 6: Final answer
    x = 163,087.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.